One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Berlin you can estimate when it's a good idea to plant black radish by looking at the USDA zone info.

Planting Calendar for Black radish

Frost tolerance for black radish:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Black radish tend to make it in some cold which means that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant black radish in Berlin is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant black radish and expect a good harvest is probably September. If you wait any later than that and your black radish may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your black radish indoors.

Last Frost Date

The average date of last frost is April 15 in Berlin. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Berlin is not always accurate the actual date of last frost changes from year to year. Since half of the time in Berlin you get a frost after April 15 be ready to cover your black radish if you have a surprise late frost.

USDA Zone Info for Berlin

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Berlin

You may be interested in your other planting guides for Berlin.